Malicious PDF — malware analysis report

Static analysis result for SHA-256 949f0ddde284f511…

MALICIOUS

PDF

44.1 KB Created: 2021-05-19 11:59:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 10b5c9b6ac6ee595e32b45365e00f7a5 SHA-1: 92bb0e36e855f123486101f40ecee2fea16f64c9 SHA-256: 949f0ddde284f511ad3e3ec2dd62a8b3ece2ac09a2e020867b131ab19d99dde6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and other malicious PDFs, all promising game-related cheats or currency. The primary redirector URL is associated with known malicious infrastructure. The document body and embedded URLs suggest a lure for free game items, which is a common social engineering tactic to trick users into downloading further malware or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-free-spins-and-free-coins-game-hack In PDF document text
    • http://aircraft.by/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://aircraft.by/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045eb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45EB 25212 bytes
SHA-256: 70609e13092f59ae53de045ce76e12edcbaa1caea793fe939434ac197d3a4eaa
font_01_sfnt_off00007f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F57 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00008a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A36 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

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